/Engine/Source/Editor/UnrealEd/Public/ComponentVisualizerManager.h
Pass delta input to active visualizer
bool HandleInputDelta ( [FEditorViewportClient](API\Editor\UnrealEd\FEditorViewportClient) * InViewportClient, [FViewport](API\Runtime\Engine\FViewport) * InViewport, FVector & InDrag, FRotator & InRot, FVector & InScale ) const